package com.michaellou.Test;
public class MoneyUtil {      
    
    public static String[] chineseDigits = new String[] { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"};      
     
    /**    
     * 把金额转换为汉字表示的数量，小数点后四舍五入保留两位    
     * @param amount    
     * @return    
     */     
    public static String amountToChinese(double amount) {      
     
        if(amount > 99999999999999.99 || amount < -99999999999999.99)      
            throw new IllegalArgumentException("参数值超出允许范围 (-99999999999999.99 ～ 99999999999999.99)！");      
     
        boolean negative = false;      
        if(amount < 0) {      
            negative = true;      
            amount = amount * (-1);      
        }      
     
        long temp = Math.round(amount * 100);      
        int numFen = (int)(temp % 10); // 分      
        temp = temp / 10;      
        int numJiao = (int)(temp % 10); //角      
        temp = temp / 10;      
        //temp 目前是金额的整数部分      
     
        int[] parts = new int[20]; // 其中的元素是把原来金额整数部分分割为值在 0~9999 之间的数的各个部分      
        int numParts = 0; // 记录把原来金额整数部分分割为了几个部分（每部分都在 0~9999 之间）      
        for(int i=0; ; i++) {      
            if(temp ==0)      
                break;      
            int part = (int)(temp % 10000);      
            parts[i] = part;      
            numParts ++;      
            temp = temp / 10000;      
        }      
     
        boolean beforeWanIsZero = true; // 标志“万”下面一级是不是 0      
     
        String chineseStr = "";      
        for(int i=0; i<numParts; i++) {      
     
            String partChinese = partTranslate(parts[i]);      
            if(i % 2 == 0) {      
                if("".equals(partChinese))      
                    beforeWanIsZero = true;      
                else     
                    beforeWanIsZero = false;      
            }      
     
            if(i != 0) {      
                if(i % 2 == 0)      
                    chineseStr = "亿" + chineseStr;      
                else {      
                    if("".equals(partChinese) && !beforeWanIsZero)   // 如果“万”对应的 part 为 0，而“万”下面一级不为 0，则不加“万”，而加“零”      
                        chineseStr = "零" + chineseStr;      
                    else {      
                        if(parts[i-1] < 1000 && parts[i-1] > 0) // 如果"万"的部分不为 0, 而"万"前面的部分小于 1000 大于 0， 则万后面应该跟“零”      
                            chineseStr = "零" + chineseStr;      
                        chineseStr = "万" + chineseStr;      
                    }      
                }      
            }      
            chineseStr = partChinese + chineseStr;      
        }      
     
        if("".equals(chineseStr))  // 整数部分为 0, 则表达为"零元"      
            chineseStr = chineseDigits[0];      
        else if(negative) // 整数部分不为 0, 并且原金额为负数      
            chineseStr = "负" + chineseStr;      
     
        chineseStr = chineseStr + "元";      
     
        if(numFen == 0 && numJiao == 0) {      
            chineseStr = chineseStr + "整";      
        }      
        else if(numFen == 0) { // 0 分，角数不为 0      
            chineseStr = chineseStr + chineseDigits[numJiao] + "角";      
        }      
        else { // “分”数不为 0      
            if(numJiao == 0)      
                chineseStr = chineseStr + "零" + chineseDigits[numFen] + "分";      
            else     
                chineseStr = chineseStr + chineseDigits[numJiao] + "角" + chineseDigits[numFen] + "分";      
        }      
     
        return chineseStr;      
     
    }      
     
     
    /**    
     * 把一个 0~9999 之间的整数转换为汉字的字符串，如果是 0 则返回 ""    
     * @param amountPart    
     * @return    
     */     
    private static String partTranslate(int amountPart) {      
     
        if(amountPart < 0 || amountPart > 10000) {      
            throw new IllegalArgumentException("参数必须是大于等于 0，小于 10000 的整数！");      
        }      
     
     
        String[] units = new String[] {"", "拾", "佰", "仟"};      
     
        int temp = amountPart;      
     
        String amountStr = new Integer(amountPart).toString();      
        int amountStrLength = amountStr.length();      
        boolean lastIsZero = true; //在从低位往高位循环时，记录上一位数字是不是 0      
        String chineseStr = "";      
     
        for(int i=0; i<amountStrLength; i++) {      
            if(temp == 0)  // 高位已无数据      
                break;      
            int digit = temp % 10;      
            if(digit == 0) { // 取到的数字为 0      
                if(!lastIsZero)  //前一个数字不是 0，则在当前汉字串前加“零”字;      
                    chineseStr = "零" + chineseStr;      
                lastIsZero = true;      
            }      
            else { // 取到的数字不是 0      
                chineseStr = chineseDigits[digit] + units[i] + chineseStr;      
                lastIsZero = false;      
            }      
            temp = temp / 10;      
        }      
        return chineseStr;      
    }      
     
       
     
    public static void main(String[] args) {      
     
        if(args.length == 0) {      
            System.out.println("转换演示：");      
            System.out.println("-------------------------");      
            System.out.println("25000000000005.999: " + amountToChinese(25000000000005.999));      
            System.out.println("45689263.626: " + amountToChinese(45689263.626));      
            System.out.println("0.69457: " + amountToChinese(0.69457));      
            System.out.println("253.0: " + amountToChinese(253.0));      
            System.out.println("0: " + amountToChinese(0));      
            System.out.println("-------------------------");      
     
            System.out.println("999: " + amountToChinese(999));      
                  
            //System.out.println(Long.MAX_VALUE);      
            //System.out.println(Long.MIN_VALUE);      
        }      
        else {      
            System.out.println("转换结果：");      
            System.out.println(args[0] + ": " + amountToChinese(Double.parseDouble(args[0])));      
        }      
     
    }      
     
}      
